chore: support multiple command

.github/workflows/ci.yml

@@ -23,3 +23,14 @@ jobs:
         key: ${{ secrets.KEY }}
         port: ${{ secrets.PORT }}
         script: whoami
+
+    - name: multiple command
+      uses: appleboy/ssh-action@master
+      with:
+        host: ${{ secrets.HOST }}
+        username: ${{ secrets.USERNAME }}
+        key: ${{ secrets.KEY }}
+        port: ${{ secrets.PORT }}
+        script: >
+          whoami
+          ls -al